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A. T. ANDERSON.

WRENCH.

APPLICATION FILED OCT. 20. I916.

1,309,31 1 Patented July 8, 1919.

ANTON T. ANDERSON, OF CHICAGO, ILLINQIS.

Specification of Letters Patent.

WRENCH.

Patented July 8, 1919.

Application filed October 20, 1916. Serial No. 126,795.

T all whom it may concern:

Be it known that I, ANTON T. ANDERsoN, a citizen of the United States,residing at Carroll Ave, Chicago, in the county of Cook and State ofIllinois, have invented new and useful Improvements in renches, of whichthe following is a full, clear, concise, and eXact description,reference being had to the accompanying drawing, forming a part of thisspecification.

My invention relates to wrenches.

One of the objects of my invention is to provide an improved wrench inwhich the jaw mechanism is pivotally secured to the handle and in whichimproved means are provided for holding the jaw mechanism in an adjustedposition which is simple in construction, easy to manufacture, andethcient and durable in use and in which the adjusting mechanism iseasily accessible for operation.

In the drawings in which one embodiment of my invention is shown;

Figure 1 is a side view of a wrench embodying my invention.

Fig. 2 is a view of the other wrench.

Fig. 3 is an edge view of the head of the wrench.

Fig. 4 is a face view of the head of the Wrench with the retainingplates removed.

Fig. 5 is a sectional view on the line 55 of Fig. 3 showing both dogs inengagement.

Fig. 6 is a sectional view on the line 5-5 of Fig- 3, showing only onedog in engagement.

Fig. 7 is a perspective view member.

Fig. 8 is a perspective view of one of the dogs.

Referring to the drawings in detail, the wrench shown comprises a handle10, jaw mechanism 11 pivotally mounted on the handle and the retainingmechanism 12 for holding the jaw mechanism in adjusted position.

The handle 10 comprises the handle proper 13, an arm 14: eXtending fromthe handle 13, to which the jaw mechanism 11 is pivoted, and a guidingand supporting portion 15 for engaging the jaw mechanism 11 to assist inholding it in position. The jaw mechanism 11 comprises a jaw member 16,secured to the arm 1 1 by means of a pivot pin 17 and a sliding jawmember 18, having side of the of the wedge a groove 19 for engagementwith the rib or guide 20 on the jaw member 16. For adjusting the slidingjaw member 18, a screw 21 is located in the recess 22 in the aw member16. This screw 21 is provided with pintles .or trunnions 23 located inbearing recesses 21 in the jaw member 16. A part of this screw engageswith teeth 25 on the sliding jaw member 18. For holding the sliding jawmember in place and for holding the screw 21 in the recess, theretaining plate 26 is secured to the jaw member 16 by means of screws27. This plate 26 has an opening through which access may be had to theadjusting screw 21. The retaining mechanism 12 comprises two dogs 29 and29 for engagement with a series of teeth 30 on the jaw member 16, awedge member 31 slidably mounted on the handle 10 and provided withoppositely inclined wedge flanges, 32, 32 for engagement with the recess33 in the dog 29, and a leaf spring 34: and a screw 35 for holding thedogs, 29, 29" and the wedge member 31 in position. The screw 35 eX-tends through an opening 36 in the spring 34: and through a slot 37 inthe wedge 31. The dogs 29 and 29 are provided with notches 38 forengagement with the screw whereby the dogs 29 and 29 are prevented fromslipping, with respect to the wedge member 31. In use if it is desiredto rotate the jaw mechanism about the pivot 17 in a clockwise direction,(Fig. 1) the upper dog 29 must be thrown to the position shown in'Fig.6. To accomplish this the wedge member 31 is pushed toward the pivot 17,the wedge flange 32 lifting the dog 29 out of the engagement with theteeth 30, the dogs 29 and 29 being held from movement along with thewedge flanges by the engagement of the notches 38 with the screw 35. Thejaw mechanism may then be rotated in a clockwise direction, the dog 29being lifted clear of the teeth and the dog 29 sliding over them.Similarly by movement of the sliding wedge 31 in the opposite direction,the dog 29 is lifted and the jaw mechanism can be rotated in acontra-cloclnvise direction. When the jaw mechanism has been adjusted tothe desired position, it may be held there by moving the wedge member 31to mid position, which will move the dogs 29 and 29 to the positionshown in Fig. 5 in which both are in engagement with the teeth 30. Theadjustment of the sliding jaw 18 is effected by rotation of the screw21, which acts on the teeth to move the jaw 18 in or out.

The guiding and supporting portion 15 does not extend far enough overthe face of the jaw mechanism to prevent access to the screw 21 in anyposition of the jaw mecha nism. Both jaw members 16 and 18 are so shapedthat they may be readily dropforged.

The plate 26 may be of punched sheet metal. That portion of the handle13, adjacent the teeth 30 engages and supports the dogs 29 and 29 whenthe wrench is in use. This support, adjacent the points of the dogs,lessens the danger of the dogs being broken by the strain put on them.

Having described my invention, what I claim as new and desire to secureby Letters Patent, is

1. A wrench comprising a handle, a flat jaw member pivotally securedthereto, said jaw member being provided with a series of ratchet teethon one face thereof and two oppositely acting dogs supported by saidhandle for engaging said teeth, and a wedge member having two oppositelyinclined wedge surfaces acting on said dogs respectively for moving theminto and out of oppo site positions with respect to said teeth.

2. A wrench comprising a handle, a flat jaw member pivotally securedthereto, said jaw member being provided with a series of ratchet teethon one face thereof and two oppositely acting dogs supported by saidhandle for engaging said teeth, and a wedge member having two oppositelyinclined wedge flanges acting on said dogs respectively for moving theminto and out of opposite positions with respect to said teeth, each doghaving a groove to receive one of said flanges.

3. A wrench comprising a handle, a flat jaw member pivotally securedthereto, said jaw member being provided with a series of ratchet teethon one face thereof and two oppositely acting dogs supported by saidhandle for engaging said teeth, and a wedge member having two oppositelyinclined wedge flanges acting on said dogs respectively for moving theminto and out of operative positions with respect to said teeth, each doghaving a groove to receive one of said flanges, said wedge member havinga slot therethrough, a leaf spring bearing on said dogs and having anopening therethrough and a fastening member for said leaf springextending through said opening and slot and secured to said handle.

-l. A wrench comprising a handle member, a flat jaw mechanism pivotallysupported thereby, said jaw mechanism comprising an arcuate portionconcentric with said pivot, provided with a series of ratchet teeth onone face thereof and a dog supported by said handle for engaging saidteeth, said jaw mechanism comprising two jaw members and comprising alsoa rotatable member supported by said jaw mechanism for effecting therelative adjustment of said jaws, said mechanism being recessed toreceive said rotatable member, said handle having an arm adjacent oneface of said jaw mechanism to which the jaw mechanism is pivoted andhaving also a guiding and supporting portion ad acent the periphery ofsaid arcuate por tion and engaging the face of said flat jaw mechanism011 the side opposite said arm, said recess having an opening betweenthe axis of said jaw mechanism and said arcuate portion through whichsaid rotatable memher is accessible, said guide portion not eX- tendingfar enough to prevent access to said rotatable member through saidopening.

In witness whereof, I have hereunto subscribed my name.

ANTON T. ANDERSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). G.

